Polarized Autler–Townes splitting of Rydberg six-wave mixing

Abstract

Polarized Autler-Townes (AT) splitting of six-wave mixing (SWM) involving Rydberg atoms is for the first time observed in a thermal vapor cell. By scanning the frequency detuning of the dressing field, AT splitting of Rydberg SWM is compared with that of non-Rydberg SWM with an elliptically polarized probe field. It is demonstrated that the AT spectra are strongly dependent on the interaction between Rydberg atoms. Moreover, AT splitting of SWM is cyclically modulated via a multi-dark state and presented by the corresponding spatial SWM AT splitting images. The theoretical calculations are in good agreement with the experimental results.

Special Issue on Rydberg atom physics

“…The Rydberg blockade effect enables deterministic control of the number of excitations, while the use of an atomic ensemble leads to a collective enhancement of the atom-cavity coupling. Finally, Che et al [46] extend the scope of this work to thermal atoms. By studying phase-matched nonlinear processes such as six-wave mixing, they are able to carry out preliminary studies of the effect of Rydberg interactions on such systems.…”

Single-photon transistor based on cavity electromagnetically induced transparency with Rydberg atomic ensemble

“…We choose the parameters γ r = 10 −2 κ , ε s = 5 MHz, Ω 2 = 20 MHz, τ = 50 μ s and the single-atom cooperativity , then we can obtain the optical gain G ≈ 1125 for the single-photon transistor. As the experiment progresses, cavity EIT 15 and multi-wave mixing 50 , 51 for strong nonlinearity has been successfully demonstrated in Rydberg atoms. Therefore, our scheme could be realized in the near future.…”

One‐Step Generation of Energy‐Time‐Polarization‐Hyper‐Entangled W‐Class Triphotons: Nonlinear and Linear Optical Responses

“…The dependence of polarization on frequency is previously confirmed by experiment. [ 59 ] Other cases can be defined in the same way. $${\sigma }_{S10}^{+} $$, $${\sigma }_{S20}^{-} $$ and $${\sigma }_{S30}^{+} $$ are the central circularly polarized modes of S 1‐3 photons, respectively; they are different constants.…”